Current File : //usr/share/zsh/5.5.1/functions/_users

#compdef passwd groups userdel chage chfn

local expl users

if zstyle -a ":completion:${curcontext}:users" users users; then
  _wanted users expl user compadd "$@" -a - users
  return
fi

_wanted users expl user compadd "$@" -k - userdirs